2.How much milk is in the bottle?

\(4x^2-14x+5+\sqrt{3x+1}=0\)

\(\Leftrightarrow 4x^2-(13x-3x)+(5+1)=0\)

\(\Leftrightarrow 4x^2-10x+6=0\)

\(\Leftrightarrow 4x^2-4x-6x+6=0\)

\(\Leftrightarrow (x-1).4x-(x-1).6=0\)

\(\Leftrightarrow (x-1).(4x-6)=0\)

\(\Leftrightarrow \left[\begin{array}{} 4x-6=0\\ x-1=0 \end{array} \right.\)

\(\Leftrightarrow \left[\begin{array}{} 4x=6\\ x=0+1 \end{array} \right.\)

\(\Leftrightarrow\left[\begin{array}{} x=\dfrac{3}{2}\\ x=1 \end{array} \right.\)

Vậy S={\(\dfrac{3}{2};1\)}

1.plays

2.have

3.goes

4.circles

5.starts

6.doesn't study/does not study

7.teaches

10.go

1.catch
2.wears
3.drink
4.goes
5.has
6.eat out
7.watches
8.teaches

4.do not

1.do not

2.does not

3.do not

4.do not

5.does not

6.does not

7.do not

8.does not

2. do: homework, judo, exercise,drawing